What is logical variable?
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What is an immutable object? How do you create one in java?
How many types of flags are there?
What is io stream in java?
How do you use compareto in java?
Java does not support multiple inheritance. how interface helps in the same?
What is the difference between Stream Reader and Stream Writer?
Describe how to implement singleton design pattern in struts.
what is the difference between static class and singleton class? can we create static class?
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What is the difference between super class & sub class?
What is Locale class?
What is the difference between path and classpath variables?
How is a structure different from array ?